git clone git://git.osmocom.org/sdrangelove.git

sdrbase/dsp/samplesink.cpp

@@ -0,0 +1,66 @@
+#include "dsp/samplesink.h"
+
+SampleSink::SampleSink()
+{
+}
+
+SampleSink::~SampleSink()
+{
+}
+
+#if 0
+#include "samplesink.h"
+
+SampleSink::SampleSink() :
+	m_sinkBuffer(),
+	m_sinkBufferFill(0)
+{
+}
+
+void SampleSink::feed(SampleVector::const_iterator begin, SampleVector::const_iterator end)
+{
+	size_t wus = workUnitSize();
+
+	// make sure our buffer is big enough for at least one work unit
+	if(m_sinkBuffer.size() < wus)
+		m_sinkBuffer.resize(wus);
+
+	while(begin < end) {
+		// if the buffer contains something, keep filling it until it contains one complete work unit
+		if((m_sinkBufferFill > 0) && (m_sinkBufferFill < wus)) {
+			// check number if missing samples, but don't copy more than we have
+			size_t len = wus - m_sinkBufferFill;
+			if(len > (size_t)(end - begin))
+				len = end - begin;
+			// copy
+			std::copy(begin, begin + len, m_sinkBuffer.begin() + m_sinkBufferFill);
+			// adjust pointers
+			m_sinkBufferFill += len;
+			begin += len;
+		}
+
+		// if one complete work unit is in the buffer, feed it to the worker
+		if(m_sinkBufferFill >= wus) {
+			size_t done = 0;
+			while(m_sinkBufferFill - done >= wus)
+				done += work(m_sinkBuffer.begin() + done, m_sinkBuffer.begin() + done + wus);
+			// now copy the remaining data to the front of the buffer (should be zero)
+			if(m_sinkBufferFill - done > 0) {
+				qDebug("error in SampleSink buffer management");
+				std::copy(m_sinkBuffer.begin() + done, m_sinkBuffer.begin() + m_sinkBufferFill, m_sinkBuffer.begin());
+			}
+			m_sinkBufferFill -= done;
+		}
+
+		// if no remainder from last run is buffered and we have at least one work unit left, feed the data to the worker
+		if(m_sinkBufferFill == 0) {
+			while((size_t)(end - begin) > wus)
+				begin += work(begin, begin + wus);
+			// copy any remaining data to the buffer
+			std::copy(begin, end, m_sinkBuffer.begin());
+			m_sinkBufferFill = end - begin;
+			begin += m_sinkBufferFill;
+		}
+	}
+}
+#endif